This interior view of Transbay Terminal shows how high speed rail would operate in a large transit oriented station.

Photo: Nc3d, Courtesy To The Chronicle

This interior view of Transbay Terminal shows how high speed rail...

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Gov. Jerry Brown (center) holds up a legislation which he signed authorizing initial construction of California's $68 billion high-speed rail line with Los Angeles Mayor Antonio Villaraigosa (left) and state and city officials looking at Union Station on July 18, 2012 in Los Angeles, California. The bill authorizes $10 billion in state bonds to start construction of a high-speed rail line between Los Angeles and San Francisco.

Photo: Kevork Djansezian, Getty Images

Gov. Jerry Brown (center) holds up a legislation which he signed...

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FILE -This undated file photo provided by the California High Speed Rail Authority shows an artist's rendering of a high-speed train traveling along the California coast. A new poll finds California voters are experiencing buyers' remorse over a proposed $68-billion bullet train project. The USC Dornsife/Los Angeles Times survey finds 55 percent of voters want the ambitious high-speed rail bond issue that was approved in 2008 placed back on the ballot — and 59 percent say they now would vote against it. (AP Photo/California High Speed Rail Authority)

Now that Gov. Jerry Brownhas signed legislation to allow the state to spend billions on high-speed rail, Bay Area residents had better brace for the real ride - a push for $650 million in toll hikes and new San Francisco taxes.

That's how much will be needed to help pay for a tunnel to connect the Transbay Terminal to the Caltrain station at Fourth and King streets.

As it turns out, none of the $2.5 billion in tunnel costs were included as part of the narrowly approved high-speed-rail deal.

It's up to the locals to make the tunnel happen. If they don't, the $68 billion high-speed-rail line from Los Angeles will dead-end several blocks from downtown proper.

Building the tunnel will put San Francisco in competition with those hoping to finish BART to San Jose - both projects will be tussling for $1.8 billion that the federal government will direct to the Bay Area in the coming years.

Just for work to start on the 1.2-mile dig through the heart of the city, however, the Bay Area has to come up with its own $650 million. The current plan is to raise $300 million from higher bridge tolls and $350 million in San Francisco sales-tax dollars.

The date for when the Legislature and voters would be asked to approve another $1 toll hike to raise the $300 million in tunnel money is a bit more elusive. Although acknowledging that toll money would be needed for a San Francisco tunnel, Rentschler says there are no plans on the boards to seek an increase.

Even if all the money does come through and the tunnel gets dug, High-Speed Rail Authority boss Dan Richardsays, the bullet train won't arrive in San Francisco until 2028 or so. Until then, the tunnel would be used only by Caltrain.

Oil and water: Even before they qualified their initiative for San Francisco's November ballot last week, backers of the effort to restore Hetch Hetchy Valley in Yosemite National Park were turning up the campaign rhetoric.

According to a recent fundraising appeal, the century-old dam in the Sierra that supplies water for San Francisco, the Peninsula and elsewhere is an environmental disaster worse than the Deepwater Horizon oil spill in the Gulf of Mexico in 2010.

"Imagine the BP oil spill multiplied by 326: That's how much water was deliberately flooded into Yosemite National Park," Restore Hetch Hetchy executive Mike Marshallwrote in his appeal.

He added, "Your donation today sends a loud and clear message to San Francisco bureaucrats: When you've made a mess, you clean it up!"

"A better comparison would be the catastrophic effects of demolishing Hetch Hetchy and draining a century-old lake," he said, "which really would be a disaster for the economy and the environment."

Filleted: With the help of friends, a gay South Bay couple has at least temporarily blocked the very Christian-minded Chick-fil-A chicken chain from opening an outlet in Mountain View.

City bureaucrats had recently issued a routine zoning variance to allow a Chick-fil-A franchise to be built on busy El Camino Real.

But David Speakmanand his husband, Richard, of Mountain View - who in 2008 became the first gay couple in Santa Clara County to marry - had a bone to pick.

They didn't like the company's reputation for being antigay. The Georgia-based chain's president did nothing to dispel that reputation recently when he defended "biblical principles," including traditional marriage.

So David Speakman made an Internet appeal for the $1,000 needed to bring a zoning challenge before the Mountain View City Council - and within 14 hours, more than enough money had rolled in from donors.

That put Chick-fil-A on ice at least until September. In a statement, the company reaffirmed its "biblically based principles" but said it treats everyone - gay or straight - equally and with respect.

"It could be Mother Teresathat owns it, and it would be a bad place," Speakman said, citing traffic and other concerns. "But because it was a bunch of bigots, it gave us an extra nudge."